That NATO looks really good. I think the watch head would look good on a wide variety of straps which is good. It’s like having a bunch of watches with a quick strap change.
That would be the only part that sucks, though if I am not mistaken the shop app how a rewards program for discounts on future purchases based off what you spend? So here is hoping I am correct and you have a credit based off your order.
I would look at StrapCo or StrapHabit. I have liked both. Vario I do not believe make 21 mm straps. I have not tries Barton straps but like there watch rolls.
Those are the affordable ones I know of. I know a few more but the are a bit more.
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